[PATCH 1/1] gpiolib: Zero structure which will be returned to usermode to avoid kernel info leak.
From: Gabriel Knezek <hidden>
Date: 2021-06-16 21:51:42
Subsystem:
gpio subsystem, gpio uapi, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
Apologies if I got this slightly wrong; this is actually my first time submitting a patch to the kernel. (:
Thanks.
-Gabe
Fixes: aad95584 ("gpiolib: cdev: support GPIO_V2_GET_LINEINFO_IOCTL and GPIO_V2_GET_LINEINFO_WATCH_IOCTL")
Signed-off-by: Gabriel Knezek <redacted>
---
drivers/gpio/gpiolib-cdev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index ee5903aac497..af68532835fe 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c@@ -1865,6 +1865,7 @@ static void gpio_v2_line_info_changed_to_v1( struct gpio_v2_line_info_changed *lic_v2, struct gpioline_info_changed *lic_v1) { + memset(lic_v1, 0, sizeof(*lic_v1)); gpio_v2_line_info_to_v1(&lic_v2->info, &lic_v1->info); lic_v1->timestamp = lic_v2->timestamp_ns; lic_v1->event_type = lic_v2->event_type; --
2.25.1